#site_center {
	text-align:center;
	width:100%;
	height:100%;
}
#main {
	width:950px;
	height:100%;
	text-align:center;
	margin:0 auto;
	background-color:#CCCCCC
}

/*======= footer =======*/
#footer {
	width:990px; 
	height:52px; 
	filter:alpha(opacity=70); 
	opacity: 0.7; 
	-moz-opacity:0.7; 
	background-color:#000000; 
}